Reverse-gear for hoisting-machines and analogous uses.



A. LAMBERT. REVERSE GEAR FOR HOISTING MACHINES ANDIANALOGOUS USES.

A PPLIOATION FILED DEO.16,1907.

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A. LAMBERT.

REVERSE GEAR FOR HOISTING MACHINES AND ANALOGOUS USES.

APPLIOATION FILED DBO. 16,1907.' 913,900. Patented Mar. 2, 1909.

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REVERSE GEAR FOR HOISTING MACHINES AND ANALOGOUS USES.

APPLICATION FILED DEG.16,1907.

9 1 3,900. Patented Mar. 2, 1909.

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ASHER LAMBERT, OF NEWARK, NEW JERSEY.

REVERSE-GEAR FOR HOISTING-MACHINES AND ANALOGOUS USES.

Application filed December To all whom it may concern:

Be it known that I, AsHER LAMBERT, a citizen of the United States, residing at 1 Johnson avenue, Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Reverse-Gear for Hoisting Machines and Analogous Uses, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to hoisting machines in which, in addition to the drums for the hoisting ropes, it is sometimes necessary to provide a swinging-drum, to turn a bull-wheel fastened upon a derrick-mast, or for other purposes where a reversible shaft upon the hoister is desired.

In the present invention, the reversing device or mechanism is constructed upon an independent bed-plate and attached to the end of the hoisting machine frame by detachable connections which enable it to be adjusted in the proper position for use with the hoistin mechanism when required, and to be detac ed and removed at other times. This independent bed-plate is provided with bearings which sustain the parts of the reversing device in an operative condition, and the detachable connections are made ad justable so that the teeth may be carefully adjusted to one another upon cog-wheels journaled respectively upon the main frame and the independent bed-plate. The reversing device is constructed with a reversible swinging drumshaft and with two reversing shafts which are connected by intermeshing gear-wheels so as to revolve in opposite directions and driven by a geared connection with one of the continuously revolving drum-shafts upon the hoister-frame. These reversing shafts are shorter than the drum-shafts so that one end may be journaled in a. line with the journals upon the main frame, and the other ends may be supported in bearings upon the independent ed-plate, which can thus be made narrower than the main frame. By bolting an extension bediece upon the edge of the inde pendent ed-plate it can be made of any width desired to correspond with the frames of various hoisting machines, and the same reversing mechanism may therefore be used with hoisting machines of different sizes and Specification of Letters Patent.

Patented March 2, 1909.

16, 1907. Serial No. 406,637.

supported by skids secured beneath the frames of such machines. The reversible swinging drum-shaft is provided with a cog-wheel and is so mounted in bearings upon the independent bed-plate that the cogwheel meshes with the two pinions and may therefore be turned in either direction by engaging the suitable pinion with its friction driver.

The invention will be understood by reference to the annexed drawing, in which Figure 1 is a plan of the reversing device connected to a hoisting machine; Fig. 2 is an elevation of the reversing device and its connection to the frame of the hoisting machine; Fig. 3 is a plan of the hoisting device with the parts upon the reversing shafts in section where hatched; and Fig. 4 is an elevation in section on line l l in Fig. 3. Fig. 5 is a plan, and Fig. 6 an edge view of the bedplate for the reversing device.

The reversing device will first be described, and then its mode of connection with a hoisting machine.

The device has an independent bed-plate a, upon which are mounted a pedestal (1 carrying bearings for the reversing shafts e, e, and a pedestal (Z carrying bearings for the said shafts and also for one end of the reversible shaft 0, and has an extension bedpiece a carrying a bearing for the opposite end of the reversible shaft 0. The pedestal d is also shown with a bearing f upon one corner, to carry an intermediate shaft 9 having a gear-wheel ft for transmitting motion to the shafts c and e. The said shafts are connected by intermeshing gear-wheels t and j, which thus rotate the reversing shafts in opposite directions. The goar-wl1eels t and are provided each with a friction-driver in the form of a cone 7:, and pinions Z and Z are mounted to turn loosely upon the shafts e and e and provided each with a friction-seat m in the form of a hollow cone fitted to one of the drivers 7c. The reversible swinging drum shaft 0 is shown mounted above the shafts e and e, and provided with a cogwheel a which engages the pinions Z and Z and is thus turned in either direction by engaging the suitable pinion with the frictiondriver.

The means shown for engaging the pinions at will with the drivers is the same as that commonly employed upon the drums of hoisting machines, and consisting of a crosskey inserted through the reversing shaft adjacent to the outer side of the pinion, and a thrust-pin p inserted through the center of the shaft against such cross-key. Thrustscrews q and g are mounted in caps or housings 12 upon the outer bearings of the reversing shafts and are threaded in opposite directions. Cranks 1" upon the outer ends of the screws are connected by a link 8 to turn them simultaneously, and a hand-lever t and arm 2" are connected with the cranks by a link a. By forming a connection between the screws to turn them simultaneously, one of them is retracted as the other is advanced, owing to their reverse threading, and the movement of the hand-lever thus operates to press one of the pinions toward its friction-driver and to release the other from its corresponding driver. When the hand-lever stands in its central position as shown in Fig. 4, both the pinions are clear from their drivers, so that although the drivers may be rotated con tinuously the reversing shaft is not operated until the hand-lever is moved in one direction or the other; which produces a rotation of the shaft in one direction or the other, as desired.

In Fig. 3, swinging drums o and i) are shown upon opposite ends of the reversible shaft 0 with ropes V, V wound thereon in opposite directions, the movement of the drum in either direction thus serving to wind up one of the ropes and pay out the other. To operate such a reversing device with a hoisting machine, skids w are projected from beneath the holster-frame and the reversinggear-frame (formed of the bed a and its pedestals) supported thereon and linked or coupled to the hoister-frame by suitable means, as the tie-bolts :0 shown in Figs. 1 and 2. These bolts are shown provided with jam-nuts y and extended into the adjacent sides of the two frames, the nuts serving to lock them firmly in the required position when adjusted. In such power hoisters it is common to mount drums upon the frame intermediate to the ends of the drum-shafts which are supported in suitable bearings, and it is frequently important to project the drum-shafts outside of such bearings at one end and provide each with a winch for hauling in a rope when required.

Fig. 1 shows a means of connecting the reversing device with the hoisting machine, and driving the device from one of the drumshafts, and at the same time avoiding any interference with the winch upon the overhanging end of the shaft.

In Figs. 1 and 5, A represents the frame of the hoisting machine, B and C drum-shafts mounted in bearings D thereon, and E gears for driving the said shafts from an engine crank-shaft F. G and H are drums upon the shafts B and C, the shaft C being adjacent to the end of the frame A and having a gearwheel I upon one end outside the bearing D, and a winch J upon the shaft outside of such gear-wheel. The shaft B is also shown with a winch J outside the bearing D.

The intermeshing gears i and of the reversing shafts are mounted inside the pedestal cZ so that the overhanging drum '0 may set close to the pedestal d; but the power to drive the reversing device is most conveniently obtained from the drum-shaft C by fitting the gear I outside of the bearing,which necessitates the intermediate shaft g, and a gear-wheel 1 upon such shaft.

The engine may rotate the gear-wheels E continuously and thedrums G and H be connected therewith by clutches only when desired, and the gear I may thus rotate continuously and transmit an uninterrupted motion to the reversing shafts.

The tie-bolts a; serve first to adjust the gear-wheels I and 1 into suitable mesh with one another, and afterward to hold them firmly in engagement while the reversing device is in use with the hoisting machine. The use of friction-drivers, and the use of screws for pressing the friction-seats upon them in the reversing device, is the same as is common in the type of hoisting machine shown in Fig. 1, where screws g are shown provided with hand-levers r for turning the same independently when it is desired to clutch either of the drums G and Hto its driving-wheel E. Such mechanism has been found most efiicient and durable in clutching a hoisting drum to its shaft, and is employed in connecting the reversing shafts with the pinions 1 and 1, because of its efficiency and durability, and because the operator of an ordinary hoisting machine knows how to use and adjust such a friction device. The screws in the reversing device operate, however, differently from those in the hoisting machine as they are coupled together by the cranks r and link 8, and are reversely threaded, so that the operation of a single hand-lever serves to operate them simultaneously and to slacken one of the screws while tightening the other. This permits the operator, by a single handlever, to alternately couple the pinions with their frictiondrivers, and to thus impart reversible movements to the shaft 0.

It is immaterial to the operation of the reversing device itself, as constructed upon its independent frame, how the motion is conveyed to it from the hoisting machine, when connected with a power hoister, and it is obviously immaterial what power is employed to actuate the drums of the power-hoister. Steam engine cylinders K and otherparts L of two engines are shown, as is common where the power-shaftf is operated by steam; but electric motors are now employed as commonly as steam for such purpose;

It will benoticed by reference to Fig. 1,

that the reversing gearing does not require so much space as the drums G and H of an ordinary hoisting machine, and that the bed a for the reversing device does not require, therefore, to be so wide as the frame A of the hoisting device.

To adapt the reversing device for use with hoisting-frames of various widths, an extension bed-piece a of suitable width for any particular hoisting machine, is attached. to the edge of the bed (L, as shown in Figs. 1, 5 and 6, by flanges 2 upon the contiguous edges of thebeds, and bolts 2 fitted through the said flanges. In practice, portable hoisting machine frames are made in about three widths, and three different widths of the bed-piece a may therefore be kept in stock for attachment to the edge of the bed a, so that the reversing device may be carried in stock and fitted for use with any particular hoister, by bolting a bed-piece a" of suitable width to the edge of the bed (i. It will be noticed that this arrangement leaves a space between the pedestals b and (Z in which the connections for the screws 9 and q are located, as shown in Fig. 1, such space being variable according to the width of the framepiece a, but always permitting the applica tionb of the links .9 and it inside of the pedestal The hand-lever t is preferably arranged upon the outside of the pedestal Z), as shown in Fig. 1, and the arm 15 upon the inside; a rock-shaft it being attached to both and mounted in bearings in the pedestals Z) and (Z', to transmit the movement of the handlever to the arm and the link 11,.

Having thus set forth the nature of the invention what is claimed herein is:

1. In a power hoisting machine, the combination, with the frame A and one or more hoisting drums mounted thereon and a motor with drum-gear-wheels rotated continuously in one direction to turn such drum or drums, of the bed (Z narrower than the hoisting machine A, with pedestals (Z upon one side in line with the drum bearings of the main frame and pedestals (Z upon the other side inside of such line, the extension bedpiece a bolted to the bed-plate 0/ making the whole of the same width as the main frame, and having the pedestal 5 upon its outer edge, a reversible swingingdrum-shaft mounted in the pedestals Z) and (Z with the cog-wheel n thereon between the pedestals (Z and (Z and having a swinging drum upon the end, the reversing shafts e, e, mounted in the pedestals (Z, d, and having the pinions Z, Z fitted to turn thereon and meshing with the gearwheel n, gear-wheels "Z and j connecting the reversing shafts, gearing connecting such wheels with the continuously rotating drumear-wheel u on the main frame, and means or alternatey connecting the pinions Z, Z with their respective reversing shafts to rotate the swinging-drum-shaft reversely as desired.

2. I11 a power hoisting machine, the combination, with the frame A and one or more hoisting drums mounted thereon and a motor with drum-gear-wheels rotated continuously in one direction to turn such drum or drums, of the bed (t narrower than the hoisting machine frame A with pedestal (Z upon one side in line with the drum-bearings of the main frame and pedestal (Z upon the other side inside of such line, the extension bed-piece a bolted to the bed-plate a making the whole of the same width as the main frame, with the pedestal 1) upon its outer edge, a reversible swinging drum shaft 0 mounted in the pedestals b and (Z with the cog-wheel n thereon between the pedestals (Z and (Z and having a swinging-drum upon the end, the reversing shafts e, c mounted in the edestals (Z, (Z and having the pinions Z, Z htted to turn thereon and meshing with the gear-wheel 7L, gear-wheels i and j connecting the reversing-shafts, the bearing f upon the pedestal (Z carrying the intermediate shaft g with gear-wheel h upon its inner end connected to the gear 2' upon the reversing shaft, a gear-wheel I upon the outer end of the shaft 9, and a gear-wheel I upon the end of an adjacent continuously rotating drumshaft, meshing therewith, whereby the shafts e and c and the swinging-drum shaft are driven reversibly by the continuously rotating drum-shaft.

3. In a power hoisting machine, the combination, with the frame A and one or more hoisting drums mounted thereon and a motor with drum-gear-wheels rotated continuously in one direction to turn such drum or drums, of the bed (t narrower than the hoisting machine frame A, with pedestals (Z upon one side in line with the drum bearings of the main frame and pedestal (Z upon the other side inside of such line, the extension bed-piece a bolted to the bed-plate a making the whole of the same width as the main frame, and having the pedestal 5 upon its outer edge, a reversible swinging drumshaft mounted in the pedestals Z) and (Z with the cog-wheel n thereon between the pedestals (Z and (Z and having a swinging-drum upon the end, the reversing shafts e, c mounted in the pedestals (Z, (Z, the gearwheels i and j connecting the reversing shafts, and gearing connecting them with a continuously rotating drum-shaft upon the main hoister-frame, pinions Z, Z fitted to turn upon the reversing shafts e and e, such pinions and the gear-wheels i and j being provided with friction seats and frictiondrivers, the housings p upon the bearin s of the reversing shafts UJOH the pedestal d, with screws 9 and g fitted thereto having the cranks r secured adj ustably thereon, and connected by link .9, the pins 1) and crosskeys 0 in the reversing shafts for operating In testimony whereof I have hereunto set the friction-clutches, the arm t connected my hand in the presence of two subscribing with the cranks by the link u, all of such Witnesses.

screw-actuating devices lying between the ASHER LAMBERT. pedestals b and d, and a hand-lever t for Vitnesses: actuating the arm t to engage the pinions Z, T. M. WATSON, J r.,

Z alternately with their respective shafts. THOMAS S. CRANE. 

